Water heater



Patented May 19, 1925.

mi"en*rl erm-ca,

VIRGIL F. DCKtRlT,` 0F MINNEAPOLIS, MINNESOTA.

WATR HEATER.

Apta-datiert aiea Atgusti, 1'252'1. sentii n.4ss,`845.

To all whom it mm] cont/tern:

Be it known that I, Vincin vF. Di'zciiinir, a citizen of the United States, residing at liiinneapolis, Vin the county of Hennepin and State oit li/iinneso'ta, have invented certain new and useful Improvements in ater Heaters; and l do hereby declare the fol'- lowing to be a full, clear, and exact description ot the invention, lsuch as will enablev others skilled in the art to which it -appertains to make and use the same.

This invention relates to a water heater and particularly to the type adapted to be positioned in the circulatory system of ordi# nary heating apparatus for heating build# ings, such as hot water heating plants or steam heating plants.

The water heater disclosed and claimed herein is an improvement upon that ydisclosed and claimed ink Patent No; 1,290,112, `granted to me January 7th, 1919.

it is an object of this invention to provide such a heater comprising but'two main parts which can be assembled with but one watertight `ioint, thus assuring tightness and simplicity of packing.

it is another object of the invention to provide-such a device containing a multiplicity of passages through which the water to be heated is caused to How', which passages have a large external surface Aexposed to an extended flowv of the heating medium,l such as steam or hot water.

Other objects and advantages of the' in'- vention will more fully appear in the fol'- lowing description made in connection with the accompanying drawings in which like reference characters refer to the same parts throughout the ditierent views, and in which Fig. 1 is a view in side elevation of one` itorm'ot the heater, certain parts thereof be# ing shown in section;

Fig. 2 is a vertical section taken on the line 2-2 et Fig. 1, looking 1n the direction ot' the arrows;

3 is a vertical section'takenon the line 3-3 of Fig. 1, as indicated by the arrows;

Fig. 4 is a view in side elevation with parts broken away et a' modified form ot the device; and

Fig; 5 is a vertical section taken on the li1ie'5-5 of Fig. 4.

Referring` to the drawings, especially to Figsll andl, the device comprises a cylindrical or other suitably shaped shell 1 having an 'open and a closed end and provided at its open end with an external flange 1a. Spaced apertured lugs lb'pro'ject from the top of the shell lvby which it may be hung or bolted to suitable supports. The shell is provided near its open end with opposit'ely and transversely projecting bosses having end openings therethrough, which connect the inlet pipe 2 and theoutlet'pipe 3 for the iiuid heated. The shell l is adapted to receive at its open end awbase or-coie member 4 'formed at one end as a cylindrical head having therein acylindrieal chainber and 'carrying a circumferential iiange' shown as of the same vdiameter astheflang'e 1"L to which it is adapted to be bolted by'v suit-v able 'circumferentially spaced bolts, a'suitable water-tight packing beinginserted be-` tween the flanges. The flange 4a isprovide'd with spaced cylindrical bosses having threadetl'openings therethrough into which are fitted the inlet pipe 5 and the outlet pipe 6 yfor the heating medium. Communicating with and extending from the innerv end ofthe cylindricalchamber of'head 4g area plurality ot tubes 4b constituting separate U-:shap'ed or return circuit members, as shown in Fig. 3, four of these members being shown. The inner ends of these mem'- bersa're spaced from the inner end of the shell 1 and are provided with squared eX`- tensions yat their' ends'having pluginemloers 4c screwed into the end-s thereof inalinem'nt with each of the tubes.: By removal otthese plugs,` access'may be had tothe interiorfo'f the tubes for cleaningv or other purposes when the member 4 is withdrawn from the member 1. The shell 1 is providedat 'substantially opposite sides ,with grooves '1 formed in a thickened portion thereof and one of the units ot the tubes designated specifically as 4e, is formed as a partition, the ends of which are provided with tongues fitted into the grooves lcsothat the casing or shell 1 is divided into't'wo longitudinal compartments. tends across the cylindrical cham'ber in' the A7 partition member 4f eX` Cil ' Fig. 5.

head 4g separating the inlet and outlet pipes 5 and 6 and the partition formed by 4e eX- tends between the oppositely disposed tubes 4b and the closed circuit members formed thereby so that half ofthe tubes 1b are on one side of said latter partition and half on the other. The partition 4f extends in a direction substantially normal to the partition formed by unit 4e.

In operation, the heating medium will enter through the pipe 5 and into one side of the tubes 4b, passing around the ends thereof and through the other side of tubes 4b and out through pipe 6. The fluid to be heated'will enter through the pipe 2, will pass around the tubes 4b between the same and theshell 1 on one'side ofthe partition formed by member le up around said partition at the .end of the tubes 4l and out through the pipe 3.

In'the modification shown in Figs. 4 and V5, a second shell or casing 7 is provided into which the casing or shell 9, similar to the shell 1, is disposed. The shells 9 and 7 are then made as one casting and the support- Ving lugs Ta are formed on the outer casing 7. The two shells are provided with a fiange or plate A7'" at one end and a core member S similar in all respects to the base or core. member el, is disposed inside of the shell 9. This core member is provided lwith a flange 8a similar to the flange 4a which is bolted to the plate 7a by spaced circumferential bolts, a suitable packing member being interposed between said members. The core 8 is provided with the end bosses and the inlet and outlet steam pipes 10 and 11 communicate therewith. The tubes 8b are formed in the same manner as the tubes 1b and the casing 9 is, likewise, divided by a partition formed byv one set of these tubes, as clearly shown in The outer casing 7 is provided with substantially oppositely disposed ribs 7C eX- tending into close proximity with the outer side ofthe casing 9 and this casing is provided with oppositely arranged lateral bosses 7d having threaded openings extended therethrough into which are fitted the inlet pipe 12 and the Outlet pipe 13 for the heated fluid which passes between members 7 and 9. The shell 7 is also provided with oppositely arranged lateral bosses 7e having threaded openings therethrough and from which channels extend into the inner shell 9 and inlet pipe lll and outlet pipe 15' are :litted into these bosses.

In the operation of this device the heating medium will enter the. pipes 10 and circulate throughthe inner core member 3 in the samegmanner asdescribed for the core member 4, passing' out through the pipes 11. The fluid to be heated will enter pipe 111 and pass into the interior of the shell 9 around the partition therein and the tubes 8b and out Y through the ie 15 in the same manner as described above. lAnother circulation of heated fluid will be maintained through the pipes 12 and 13 into the space between the casings 7 and 9 up and around the partition 7C which extendsonly to the end of the inner shell 9 around the end of said shell and out through the pipes 13.

From the above description it is seen that applicant has provided a very simple and ellicient water heater. In the form shown in Figs. 1- and3, but two castings are used and this is also true of the formshown in Figs. 4land 5, and in each arrangement there Vis but one packing joint.

There is a great advantage in having the heating medium passed through the separate units formeel by the. tubes 4b. It will be noted that the cool water coming in through conduit 2 in F ig. 1 0r through conduit 15 in Fig. 5 will contact with the first separate unit of tubes. The water will be heated'to a higher temperature and will then Contact with another separate unit and pass around the partition and successively come in contact as its temperature is raised with the l other .units Each separate unit of tubes therefore is located in a strata of water of substantially uniform temperature. There is thus no twisting or distorting strains exerted in the unit caused by handling water of widely varying temperatures as is the case where all of the tubes communicate with one common chamber atthe end. Great dii-liculty has been experienced in practice with heaters using cast iron tubes where water of widely different temperatures is brought into Contact with pipes carrying the heating medium. The strains thus caused vquickly loosen the joints and produce leaks. VThis problem hasV been effectively solved by the vuse of separate units herein disclosed.

The construction of the heater lis exceedingly compact and the same may be made in various sizes, depending upon the capacity desired. Separate heaters may thus be dis posed inl various rooms of the house or the various places where hot water is desired.

It will, of course, be understood that various changes may be madein the form, details and proportions of the device without departing from the scope of applicants invention, which, generally stated, consists in the matter shown and described and set forth in the appended claims.

`What is claimed is:

1. A water heater comprisingl a shell, a core memberformed of a multiplicity ofY tubes constituting a plurality vofY closed circuit units spacedfrom the inner end of the shell, one of saidunits constituting a partition dividing said shell into two chambers with a group of units in each chamber, means for introducing and withdrawing a heating fluid into and from the tubes so as to cause it to circulate through said units,

v.and meansv for introducingaafluid-:t 1b@ heated `into one fltamb1` r of the `shell and withdrawingit roimthe .otherchamber of the shell ywhereby,saidlatter fluid isfcaused to circulatearonnd all voflsaid tubes.

2. A .water heater comprising .an Vouter shell ,opengatfone fend, ,an .inner core member formed ot' L.a multiplicity :of .U-shaped tubes l secured in water-tight `relation Awith structedgto Qlm `a partition and engaging grooves -formedllin the .sides of said shell and dividing it into two'chambers a pairv oli' chambersat the.other `end of the core, each chamber communicating ,with one end of all ot' said tubes, a pipe for introducing a heating fluid into one of said pair ot cham bers, a pipe for withdrawing said fluid from the other of said pair o't chambers, and means for circulating a fluid to be heated within the shell about all of said tubes.

3. A water heater comprising an outer shell having a pair of opposite longitudinal grooves. an inner core member formed of a multiplicity o't U-shaped tubes secured in water-tight relation within the shell constituting a plurality of continuous circulation units, one of which is formed as a partition extending across said shell and having portions entering said grooves for dividing said shell into two communicating parts, means for permitting a heating fluid to circulate through the tubes, inlet and outlet pipes respectively for drawing a fluid to be heated into the shell at one end of said partition and withdrawing it from the shell at the other side of the partition;l whereby said latter fluid is caused to circulate around all of said tubes.

a. A water heater comprising an integral casing comprising a base, having therein a chamber a multiplicity of open ended U- shaped tubes, each in communication with said chamber at one end thereof and forming a plurality of return circuit units, a partition member is said chamber separating one of the open ends of each ot said tubes from the other open end thereof, said tubes being provided at their other ends with core openings in longitudinal alinement therewith, and screw plugs secured in said core openings.

5. A water heater comprising a casing having an interior chamber with a transverse partition dividing the same into two compartments, a plurality oit U-shaped tube units, each having one of its legs in communication with one of said compartments and its other leg in communication with the other of said compartments whereby a circulation can be maintained from one compartment through the tubes and into a heating other compartment, aA pipe for admitting' the 'fluid into 'one 'ot said l compartments, :a pipe tor -withdrawing saidliuid -fromihe other of said compartmentsaafshell secured to said casing and;.surroundinggisaid 'chamber and tubes, Vone of said tubeiunitsv being formed .as a partition y,dividing fs'aid shell in to 4 two chambers communicating with'sea'ch other at the end of said shell remote from said casing, .said jclrambers each containing .halt of .said Y complete U-shaped tube;units whereby said secondi mentionedpartition eX- ltends `substantially normal tojsaidlli-rst .-mentioned partition.

.,6. r,A zwater lvheater comprising an .inner casing formed as a cylindricalchamber ath 4one. end .having a rtransverse partition .dividing the same into two compartments,,a-,plurality of U-'shaped tubes extending from said chamber', one side of each of said tubes communicating with one compartment and the other side of each of said tubes communieating with the other compartment, an outer shell surroundingsaid casing and provided with oppositely disposed grooves, one of said tubes being formed as a partition having portions engaging in said grooves for dividing the shell into two chambers communieating at one end.

7. A water heater having in combination spaced shell members, inlet and outlet tubes communicating with the space therebetween, a core member formed as a cylindrical chamber at one end divided into two compartments, a plurality of return circuit tubes communicating therewith secured in said inner shell, inlet and outlet pipes communieating with said inner shell, and inlet and outlet pipes communicating with the two compartments of' said chamber.

8. The structure set forth in claim 7 one of said tubes of said core member being formed as a partition dividing said inner shell into two chambers communicating in one end. v

9. A water heater comprising a shell having a closed end and an open flanged end, anA

inlet and outlet means adjacent said open end and disposed, respectively, on opposite sides of said shell, a core member secured in and closing the open end of said shell and having a flange bolted to said llanged end,

said core member having a divided chamber at its outer end, inlet and outlet conduits connected, respectively. to the parts of said chamber, and a plurality of closed circuit units Vextending from said chamber into and spaced from the walls of said shell.

10. A water heater comprising a shell, a core member fitted in the end oit said shell and comprising a divided chamber, inlet and outlet conduits connected, respectively, to the parts of said chamber, a plurality of closed circuit units extending from said chamber and extending into and spaced from the walls and inner end of said shell,

one of said units constituting a partition dividing said shell into two chambers, and means for' introducing a fluid to be heated into said shell at one side of said partition adjacent the end thereof and withdrawing said fluid from the said shell at the other side of said partition adjacent one end thereof. f

' ll. A water heater having in combination, a casing comprising spaced concentric shells having spaced closedends but connected at their other ends, said latter end of the inner shell being open, a partition extending longitudinally between said shells, oppositely disposed inlet rand outlet conduits open in the space-between said shells at opposite sides of said partition, oppositely disposed inlet tioned partition, a member secured t0 the outer end of said casing having a chambered head fitting in the open end of said inner shell, said tubes opening into said chamber, and separated inlet and outlet conduits eX- tending from said member and communicating, respectively with different ends of eachv of said U-sliaped tubes.

In testimony whereof I affix my signature.

lVIRGrIL F. DECKERT. 

